package com.ynny.dao;

import com.ynny.bean.Book;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.BeanPropertyRowMapper;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Repository;

@Repository
public class BookDaoImpl implements BookDao {

    @Autowired
    JdbcTemplate jdbcTemplate;

    @Override
    public Book selectBookById(Integer bookId) {

        String sql = "select * from t_book where book_id=?";
        Book book = jdbcTemplate.queryForObject(sql,
                new BeanPropertyRowMapper<>(Book.class),bookId);
        return book;
    }

    @Override
    public int updateBookStock(Integer bookId) {

        String sql = "update t_book set stock = stock-1 where book_id=?";
        int result = jdbcTemplate.update(sql,bookId);
        return result;
    }
}
